Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. Which of the following is NOT a function of diffusion in plant physiology?

• It allows mineral and water to be taken up through the leaves.

• It allows nutrients to be taken up through the root hairs of plants.

• It allows carbon dioxide from the stomata of the leaves to pass into leaf cells.

• It allows water to be lost from plants upon application of too many nutrients.

An Ornamental Horticulturalist wanted to multiply several desired plant species in his nursery. Which of the following term best indicates the activity that should be done by the Ornamental Horticulturalist?

• Germination

• Photosynthesis

• Propagation

• Translocation

Which of the following options would best justify the need for appropriate conditioning and storing of propagated material after the collection process?

• To ensure that propagation materials remain dormant until germination and are free from chemical contaminants. 

• To ensure that the propagation material survive and are successful through maintenance of maximum viability of the species.

• It is done to enable the best selection of propagation material that will not result in root rot.

• It is done to prevent poor collection methods and inadequate pre-planting treatment of materials.

Write the worded equation for the process by which green leaf plants make their own food.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A test that is done to determine the amount of pore spaces in soil between mineral particles is either filled with air/and or water. What is this test that is done to determine the amount of pore spaces called?

• Textural class test

• Soil structure test

• Porosity test

• Soil structure test

You may want to increase the amount of void or space in a planting media. Which of the following is an exception to the many positive reasons for increasing voids or pore spaces in the planting media?

• They increase the chance of pathogen build up

• They increase the oxygen at the root zone.

• They allow for delivery of nutrients to the plant roots.

• They increase drainage to prevent waterlogging.

Determine the reason that best justifies preconditioning or breaking of seed dormancy of some plant species like palm before planting them.

• Germination inhibiting hormones are made useless through favourable environmental conditions to induce growth of seeds.

• There is the need for treating pathogens on the seed by treating them with water and fertilizer.

• There is a need to treat all seeds with increased heat or cold temperature to break dormancy.

• All seeds need to be vernalized or scarred to break seed dormancy before sowing them in soil or soilless media.

Tags

NGSS.MS-LS1-5

How do plant growth stimulators/regulators impact the propagation process?   

• Growth stimulators or regulators in propagation reduce the chance of plants growing during propagation.

• They promote cell division, facilitate root, and shoot growth, or any other plant growth regulation in the plant physiological processes. 

• They facilitate only callusing in air layering, and cause removal of excess roots in grafted plants.

• Growth regulators/stimulators assist in developing all growing points on the plant when a part of the plant is propagated. 

Tags

NGSS.MS-LS1-5

Outline FOUR (4) hygienic practices that should be followed when propagating plants

NAME a plant and Outline FIVE (5) procedures that are undertaken when carrying out the indirect seeding method give a reason or principle for carrying out each procedure.

Tags

NGSS.MS-LS2-4